Home / 13,790.88-19,031.40-7,503.21

Finding the Fourth Proportional to 13,790.88, 19,031.40 and 7,503.21

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Solution

The fourth proportional to 13,790.88, 19,031.40 and 7,503.21 is: 10,354.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.88 : 19,031.40 = 7,503.21 : x
  2. Step 2: Convert to fraction form
    13,790.88/19,031.40 = 7,503.21/x
  3. Step 3: Cross multiply
    13,790.88x = 19,031.40 × 7,503.21
  4. Step 4: Simplify right side
    13,790.88x = 142,796,590.79
  5. Step 5: Solve for x
    x = 142,796,590.79/13,790.88
  6. Step 6: Final answer
    x = 10,354.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.